Premium
Inherent correlation between decreased marine sedimentary phosphorus and glacial atmospheric CO 2 decline
Author(s) -
Weng HuanXin,
Qin YaChao,
Weng JingKe
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl023820
Subject(s) - biogeochemical cycle , glacial period , sediment , sedimentary rock , oceanography , phosphorus , environmental science , carbonate , seawater , geology , environmental chemistry , geochemistry , geomorphology , chemistry , organic chemistry
The environmental and biogeochemical information implicated by a sediment column from the northern shelf of the South China Sea suggests that the vertical phosphorus variation in the sediment column bares a negative correlation with those of calcium carbonate and cadmium. The functional correlation between CO 2 and PO 4 3− in seawater is given by calculating a series of chemical equilibriums, indicating a coupling relationship between the accumulation of marine sedimentary P and the atmospheric CO 2 change. The decreased P accumulation in marine sediments correlated to the increase of marine primary production during the glacial period might act as a key factor causing glacial atmospheric CO 2 decline.